<mrow>

The MathML <mrow> element is used to group sub-expressions, which usually contain one or more operators with their respective operands (such as <mi> and <mn>). This element renders as a horizontal row containing its arguments.

When writing a MathML expression, you should group elements within an <mrow> in the same way as they are grouped in the mathematical interpretation of the expression. Proper grouping helps the rendering of the expression in several ways:

  • It can improve the display by possibly affecting spacing.
  • It allows for more intelligent line-breaking and indentation.
  • It simplifies the interpretation of the expression by automated systems such as computer algebra systems and audio renderers.

Attributes

class, id, style
Provided for use with stylesheets.
dir
Overall directionality of formulas. Possible values are either ltr (left to right) or rtl (right to left).
href
Used to set a hyperlink to a specified URI.
mathbackground
The background color. You can use #rgb, #rrggbb and HTML color names.
mathcolor
The text color. You can use #rgb, #rrggbb and HTML color names.

Examples

<math> 

  <mrow>
    <mn> 1 </mn>
    <mo> + </mo>
    <mn> 1 </mn>
  </mrow>
 
  <mrow>
    <mo> ( </mo>
    <mrow>
      <mi> x </mi>
      <mo> , </mo>
      <mi> y </mi>
    </mrow>
    <mo> ) </mo>
  </mrow>

</math>

Specifications

Specification Status Comment
MathML 3.0
The definition of 'mrow' in that specification.
Recommendation Current specification
MathML 2.0
The definition of 'mrow' in that specification.
Recommendation Initial specification

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
mrowChrome No support NoEdge No support NoFirefox Full support 1IE No support NoOpera No support NoSafari Full support 6WebView Android No support NoChrome Android No support NoFirefox Android Full support 4Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
dirChrome No support NoEdge No support NoFirefox Full support 12IE No support NoOpera No support NoSafari No support NoWebView Android No support NoChrome Android No support NoFirefox Android Full support 14Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
hrefChrome No support NoEdge No support NoFirefox Full support 7IE No support NoOpera No support NoSafari Full support 10WebView Android No support NoChrome Android No support NoFirefox Android Full support 7Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
mathbackgroundChrome No support NoEdge No support NoFirefox Full support 4IE No support NoOpera No support NoSafari Full support 6WebView Android No support NoChrome Android No support NoFirefox Android Full support 4Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No
mathcolorChrome No support NoEdge No support NoFirefox Full support 4IE No support NoOpera No support NoSafari Full support 6WebView Android No support NoChrome Android No support NoFirefox Android Full support 4Opera Android No support NoSafari iOS No support NoSamsung Internet Android No support No

Legend

Full support  
Full support
No support  
No support

See also

  • Grouping HTML elements: <div>